Annual report pursuant to Section 13 and 15(d)

Income Taxes (Reconciliation of Statutory Federal Income Tax Rate to Effective Rate) (Details)

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Income Taxes (Reconciliation of Statutory Federal Income Tax Rate to Effective Rate) (Details)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Tax Disclosure [Abstract]      
Provision for federal income taxes at the statutory rate 35.00% 35.00% 35.00%
State and local income taxes, net of federal benefit 1.70% 1.50% 2.70%
Non-U.S. income taxes at different rates (5.40%) (6.50%) (2.30%)
Foreign tax credits 0.00% (1.80%) (3.50%)
Reduction of accrued income taxes (4.30%) (3.50%) (4.00%)
Research credits (1.70%) (0.60%) (0.60%)
Other 0.10% 0.70% (0.70%)
Actual provision for income taxes 25.40% 24.80% 26.60%